IT1029844B - PROCEDURE TO RECOVER REREPHTHALIC ACID AND ETHYLENE GLYCOL FROM POLYESTERS - Google Patents

PROCEDURE TO RECOVER REREPHTHALIC ACID AND ETHYLENE GLYCOL FROM POLYESTERS

Info

Publication number
IT1029844B
IT1029844B IT48317/75A IT4831775A IT1029844B IT 1029844 B IT1029844 B IT 1029844B IT 48317/75 A IT48317/75 A IT 48317/75A IT 4831775 A IT4831775 A IT 4831775A IT 1029844 B IT1029844 B IT 1029844B
Authority
IT
Italy
Prior art keywords
rerephthalic
polyesters
recover
procedure
acid
Prior art date
Application number
IT48317/75A
Other languages
Italian (it)
Original Assignee
Safetech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Safetech Inc filed Critical Safetech Inc
Application granted granted Critical
Publication of IT1029844B publication Critical patent/IT1029844B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
    • D01F13/04—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of synthetic polymers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
IT48317/75A 1974-02-26 1975-02-24 PROCEDURE TO RECOVER REREPHTHALIC ACID AND ETHYLENE GLYCOL FROM POLYESTERS IT1029844B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/446,014 US3952053A (en) 1974-02-26 1974-02-26 Method for recovering terephthalic acid and ethylene glycol from polyester materials

Publications (1)

Publication Number Publication Date
IT1029844B true IT1029844B (en) 1979-03-20

Family

ID=23771004

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48317/75A IT1029844B (en) 1974-02-26 1975-02-24 PROCEDURE TO RECOVER REREPHTHALIC ACID AND ETHYLENE GLYCOL FROM POLYESTERS

Country Status (6)

Country Link
US (1) US3952053A (en)
JP (1) JPS50117742A (en)
DE (1) DE2508819A1 (en)
FR (1) FR2262016B3 (en)
GB (1) GB1471093A (en)
IT (1) IT1029844B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542239A (en) * 1981-11-18 1985-09-17 Board Of Control Of Michigan Technological University Process for recovering terephthalic acid from waste polyethylene terephthalate
US4605762A (en) * 1982-04-23 1986-08-12 Celanese Mexicana S.A. Depolymerization of condensation polymers
US5045122A (en) * 1989-12-14 1991-09-03 Eastman Kodak Company Ester hydrolysis and depolymerization of polyester and polycarbonate polymers
FR2672049A1 (en) * 1991-01-30 1992-07-31 Benzaria Jacques PROCESS FOR THE PRODUCTION OF ALKALI OR ALKALINE EARTH METAL TEREPHTHALATE OR HIGH PURITY TEREPHILIC ACID
AU2298392A (en) * 1991-07-01 1993-02-11 Fiber Industries Inc. Recovery of polyester from spent film
US5328982A (en) * 1992-11-02 1994-07-12 Eastman Chemical Company Depolymerization of substantially amorphous polyesters
US5580905A (en) * 1994-04-28 1996-12-03 United Resource Recovery Corporation Process for recycling polyesters
US5532404A (en) * 1994-05-27 1996-07-02 E. I. Du Pont De Nemours And Company Monomer recovery process for contaminated polymers
US5710315A (en) * 1994-05-27 1998-01-20 E. I. Du Pont De Nemours And Company Monomer recovery process for contaminated polymers
WO1997024312A1 (en) * 1995-12-30 1997-07-10 Sunkyong Industries Co., Ltd. Process for manufacturing terephthalic acid
WO1997024311A1 (en) 1995-12-30 1997-07-10 Sunkyong Industries Co., Ltd. Process for manufacturing terephthalic acid
DE69522479T2 (en) * 1995-12-30 2002-05-08 Sunkyong Industries Co. Ltd., Suwon METHOD FOR PRODUCING TEREPHTALIC ACID
US5958987A (en) 1996-04-10 1999-09-28 The Coca-Cola Company Process for separating polyester from other materials
FR2774374B1 (en) * 1998-01-30 2001-09-21 Tredi PROCESS FOR THE PRODUCTION OF TEREPHTHALATE FROM A PURIFIED ALKALINE METAL FROM SAPONIFICATION PRODUCTS OF RECOVERY ALKYLENE POLYTEREPHTHALATES
EA007591B1 (en) * 2001-06-19 2006-12-29 Юнайтед Рисорс Рикавери Корпорейшн Process for separating polyester from other materials
US7098299B1 (en) 2005-03-16 2006-08-29 United Resource Recovery Corporation Separation of contaminants from polyester materials
GB201002824D0 (en) * 2010-02-19 2010-04-07 Temasek Polytechnic A method of preparing a substrate for immobilization of functional substances thereon and the substrate obtained therefrom
DE102012220498A1 (en) * 2012-11-09 2014-05-15 Aquafil Engineering Gmbh Process and device for the treatment of polymers
US9550713B1 (en) 2015-07-09 2017-01-24 Loop Industries, Inc. Polyethylene terephthalate depolymerization
DE102018122210B4 (en) 2018-09-12 2023-06-29 Rittec Umwelttechnik Gmbh Process and use of a device for recycling waste containing polyalkylene terephthalate
US11161960B2 (en) 2019-05-20 2021-11-02 Octal Saoc Fzc Process for reclamation of polyester by reactor addition
US11518865B2 (en) 2019-05-20 2022-12-06 Octal Saoc Fzc Process for reclamation of polyester by reactor addition
DE102019135578A1 (en) 2019-12-20 2021-06-24 Rittec Umwelttechnik Gmbh Process, apparatus and use for reprocessing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061772B (en) * 1957-02-08 1959-07-23 Rhodiaceta Process for the production of terephthalic acid by the degradation of polymethylene terephthalates
NL120118C (en) * 1959-04-18 1900-01-01
NL250016A (en) * 1959-04-18 1900-01-01
US3240804A (en) * 1960-06-27 1966-03-15 Standard Oil Co Decolorization of aqueous solutions of phthalic acids utilizing demetallized activated carbon
US3222299A (en) * 1961-10-16 1965-12-07 Du Pont Process of reclaiming linear terephthalate polyester
US3317519A (en) * 1965-05-21 1967-05-02 Allied Chem Simultaneous depolymerization of polycaproamide and polyester with recovery of caprolactam
US3388156A (en) * 1966-02-24 1968-06-11 Teijin Ltd Method of recovering crude terephthalic acid
DE1299627B (en) * 1966-08-31 1969-07-24 Dynamit Nobel Ag Process for the production of the purest terephthalic acid
US3488298A (en) * 1966-12-01 1970-01-06 Eastman Kodak Co Polyester scrap recovery processes

Also Published As

Publication number Publication date
JPS50117742A (en) 1975-09-16
US3952053A (en) 1976-04-20
DE2508819A1 (en) 1975-08-28
FR2262016A1 (en) 1975-09-19
GB1471093A (en) 1977-04-21
FR2262016B3 (en) 1977-11-04

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